Question: When did Nigel Farage started to work at Refco and when did he leave?
Paraphrase: Nigel Farage worked at refco. When did he start and when did he leave?
SPARQL (Wikidata): SELECT ?value1 ?value2 WHERE { wd:Q318471 p:P108 ?s . ?s ps:P108 wd:Q2136640 . ?s pq:P582 ?value1 . ?s pq:P580 ?value2 }